Boring-gage



'(No mam.

T.J.BUSH.

BORING GAGB.

No. 293.144. Patehted Feb 5, 1884.

INVENTORZ K ATTORNEYS.

I 2 4/4/44 f WITNESSES: W

LM1MA\M UNITED STATES PATENT OFFICE.

THOMAS J. BUSH, OF LEXINGTON, KENTUCKY.

BORING-GAGE.

SPECIFICATION forming part of Letters Patent No. 293,144, dated February5,1884.

Application filed May 3,1883. (No model.)

To all whom, it may concern Be it known that I, THOMAS J. BUSH, ofLexington, in the county of Fayette and State of Kentucky, have inventeda new and Improved BoringGage, of which the following is a full, clear,and exact description.

This invention relates to my patent for boring-gage, dated May 2,'1882,and numbered 257,288, and also to my two patents for locking andinterlocking. bolts, dated, respectively, May 2, 1882, (No., 257,288,)and September 19, 1882, (No. 264,622,) and my present invention consistsin adapting the gage to be held, and of the means for hold ing the gage,upon a railroad-tie parallel with the rail, so that the intersectingdiagonal holes for receiving the bent bolts may be bored in the tie attheside of the rail instead of crossing under it, as described in myabovementioned patents.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a broken side elevation of the boring-gage as it appearswhen locked in position for use. Fig. 2 is a crosssectional elevation ofthe same, taken on the line as x of Fig. 1, showing the preferred formof device for locking the gage to the rail and Fig. 3 is a sectionalelevation, showinga modified form of the locking device.

The boringgag'e A, insteadof being adapted to straddle the railroad-railB, and to be secured to it for use by means of hinged jaws operated byscrews, as in my former patcut, is made somewhat lower than therail, sothat it may be placed upon the tie O,along side of the rail B, and heldthere for use by the locking device D, attached to the rail, theholding-screw (Z of the device resting upon the central seat, a, of thegage, as shown in the drawings,

The locking device .D consists, by preference, of the cramp-iron f,carrying the said screw (Z, and also the screw 9, which latter is heldat right angles to the screw cl, and when in use reaches under the headof the rail and comes against the web of the rail, as shown clearly inFig. 2, so that the projection f of the iron f, which reaches slightlyunder the head of the rail, will grasp the rail when the screw d isturned, and thus hold the screw (2 to its work, as will be understoodfrom Fig. 2.

In the form of locking device shown in This latter device is not adaptedto rails of different sizes, but the locking deviceshown in Figs. 1 and2 is, since-the screw 9 and projection f act in conjunction for securingthe device to the rail, and the screw 9 may be adjusted to suit any sizeof rail, whether large or small.

Constructed in this manner it will be seen that the gage is adapted tobe held uponthe tie G for boring diagonal intersecting holes, so thatthe rails may be held upon the ties by means of the plates F and myinterlocking bolts; and the plates F are inclined or beveled at theirends,so that the nuts of the bolts will fit properly upon them, aswillbe clearly understood from Fig. 2. Having thus described myinvention, what I claim as new, and desire to secure by LettersPatent,'is a 1. The boring-gage A, having the seat 0 similar rest a, incombination with means, substantially as described, for locking the gageto and parallel with the rail, as and for the purposes set forth.

2. The locking device D, having a forked end adapted to bear against thetop, against one side, and against the under side of the head or treadof the rail, in combination with the boring-gage A, substantially as andfor the purpose set forth.

3. The cramp-iron f, carrying screw d, and

formed with the projection f, adapted to catch against or under the headof the rail B, in combination with the boring-gage A, substantiallyas'and for the purposes set forth.

4:. The cramp-iron f, tormed with the projection f and arm f, andprovided with the screws cl 9, in combination with the boringgage A,substantially as and for the purposes set forth.

THOMAS J. BUSH.

\Vitnesses:

H. A. Wnsr, O. SEnGwIoK.

